=0: Default mode : The standard format of Aztec Code without a special header.
eAztecFm_UCCEAN
=1: UCC/EAN/GS1 mode : Special format defined by UCC and EAN/GS1 for encoding Application Identifiers. This format adds the function character FNC1 at 1st position in the symbol.
eAztecFm_Industry
=2: Industry mode: supports peculiar industry formats (adds FNC1 at 2nd position)
